High-flow anti-bending guide catheter structure

Abstract

The invention discloses a high-flow anti-bending guide catheter structure. The high-flow anti-bending guide catheter structure comprises a main catheter body, which is of a double-layer structure and is composed of an inner layer and an outer layer; the tail end of the inner layer is provided with a round head integrally formed with the inner layer, and one side of the tail end of the inner layer, which is close to the round head, is provided with a plurality of liquid outlets; a fixing flat filament is fixed inside the main catheter body; the end portion of the adhering surface of the outer layer and the inner layer is provided with a tip transition unit; the end portion of the main catheter body is connected with a pressing type split locking connector. The high-flow anti-bending guide catheter structure is simple in implementing process, changes the complex process of punching catheters in the prior art and solves the problems of low strength, cavity blocking and the like; the inner flat filament can play a key role of reinforcement when the catheter is pushed, pulled, turned and guided during operation as well as meet the requirements on radial flexibility during operation. Therefore, the high-flow anti-bending guide catheter structure solves the problem that existing catheters are easy to block, break and bend, reduces the risk during catheter puncture and meanwhile greatly reduces the production cost.

Description

technical field [0001] The present invention relates to a catheter, and more particularly to a high flow anti-fracture guiding catheter. Background technique [0002] In minimally invasive treatment, especially in vascular intervention or anesthesia treatment, the high flow rate of the catheter, the rigidity of the catheter, and the flexibility to prevent damage to the vessel wall or tissue, and the guidance and control of the catheter during the process, The fracture strength of the catheter requires high requirements. To avoid these risks, it is necessary to solve this problem in the catheter structure. [0003] Taking epidural anesthesia as an example, the basic outer diameter of the catheter is generally in the range of 0.7MM-1.1MM, and the flow rate of the catheter is 4-10ml / min. The breaking strength of the catheter is required to be 10N-15N. Therefore, these three requirements are relatively contradictory issues. When the outer diameter of the catheter is consta...

AI Technical Summary

Problems solved by technology

And the small pore size is easy to block, which brings more medical risks

As far as the current production materials are concerned, modified nylon PEBAX is generally used, but there are also many problems. However, in order to make the catheter convey smoothly, materials above 65D are generally used. As we all know, polymer materials are produced into cavities. After the catheter, the harder the material, the easier it is to discount

This undoubtedly brings risks to the operation, and the more rigid the hard object, the easier it is to damage the tissue or dura mater of the patient.

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